Open quantity in Scheduling agreement after GR

Hi SAP Gurus,

I'm facing the below scenario:

Goods receipt are done for a scheduling agreement's line item according to the delviery schedules, but open quantities are shown even after goods receipt is done in full.

This scenario appears for only one line item of the scheduling agreement.

Kindly share your experiences if you have faced such a scenario with the cause for the situation and the solution for this.

Thanks,

Siddhardh